BRONSON (WWJ/AP) - A 23-year-old southern Michigan woman has been sentenced to three to 15 years in prison in the death of her 5-month-old daughter.

Mariela Flores-Valle, of Bronson, was sentenced Monday after pleading no contest Jan. 7 to involuntary manslaughter in the death of Diane Perez. In exchange, prosecutors dismissed two original life felony charges of homicide and first degree child abuse.

An autopsy determined that Diane died last February of “enormous traumatic injuries – blunt force injuries to the head.” Prosecutors have said the child had a skull fracture. There were also signs of prior abuse, including a broken arm and broken ribs, according to reports. Investigators say all of the injuries were likely caused by ongoing child abuse, at the hands of Flores-Valle.